1/*
2 * Copyright (C) 2013 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#ifndef GraphicsContextRecorder_h
32#define GraphicsContextRecorder_h
33
34#include "platform/JSONValues.h"
35#include "platform/PlatformExport.h"
36#include "platform/graphics/GraphicsContext.h"
37#include "third_party/skia/include/core/SkPicture.h"
38#include "third_party/skia/include/core/SkPictureRecorder.h"
39#include "wtf/RefCounted.h"
40
41namespace blink {
42
43class PLATFORM_EXPORT GraphicsContextSnapshot : public RefCounted<GraphicsContextSnapshot> {
44WTF_MAKE_NONCOPYABLE(GraphicsContextSnapshot);
45public:
46    typedef Vector<Vector<double> > Timings;
47
48    static PassRefPtr<GraphicsContextSnapshot> load(const char*, size_t);
49
50    PassOwnPtr<Vector<char> > replay(unsigned fromStep = 0, unsigned toStep = 0, double scale = 1.0) const;
51    PassOwnPtr<Timings> profile(unsigned minIterations, double minDuration) const;
52    PassRefPtr<JSONArray> snapshotCommandLog() const;
53
54private:
55    friend class GraphicsContextRecorder;
56    GraphicsContextSnapshot(PassRefPtr<SkPicture>);
57
58    PassOwnPtr<SkBitmap> createBitmap() const;
59
60    RefPtr<SkPicture> m_picture;
61};
62
63class PLATFORM_EXPORT GraphicsContextRecorder {
64WTF_MAKE_NONCOPYABLE(GraphicsContextRecorder);
65public:
66    GraphicsContextRecorder() { }
67    GraphicsContext* record(const IntSize&, bool isCertainlyOpaque);
68    PassRefPtr<GraphicsContextSnapshot> stop();
69
70private:
71    RefPtr<SkPicture> m_picture;
72    OwnPtr<GraphicsContext> m_context;
73    OwnPtr<SkPictureRecorder> m_recorder;
74    bool m_isCertainlyOpaque;
75};
76
77} // namespace blink
78
79#endif // GraphicsContextRecorder_h
80